Dental matrix retainer ring



FIG. 1 is a top plan view of a dental matrix retainer ring showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front perspective view thereof;

FIG. 4 is a rear perspective view thereof;

FIG. 5 is a left side elevation thereof; and,

FIG. 6 is another front perspective view thereof shown on a slightly enlarged scale; and,

FIG. 7 is a rear perspective view thereof. 

The ornamental design for a dental matrix retainer ring, as shown and described. 